On Thursday 24 January 2013 13:47:40 Bjørn Mork wrote: > Oliver Neukum <oneukum@xxxxxxx> writes: > > On Thursday 24 January 2013 12:22:54 Bjørn Mork wrote: > > > >> Sorry for being daft, but how do I code the "20 among the last 30" part > >> there? > > > > Just by agreeing that you can live with false negatives but not false positives > > > > if (++counter > 30) { > > counter = bogus = 0; > > } else { > > if (is_bogus(packet) > > bogus++; > > if (bogus > counter/2) Should probably be something like bogus > counter/2 + 10 > > throttle(); > > } > > So, add two new counters to struct usbnet for this? That seems a little > overkill to me, but I don't see how else to implement anything like that. Memory is cheap. > It is still not completely clear to me how the throttling/unthrottling > should be done. It tested with static counters (to avoid having to > rebuild everything for this test) and a new EVENT_RX_THROTTLE flag. > Still on top of my previous patch just for safety while testing, as I am > fed up of having to reboot all the time :-) > > Doing the flag test in rx_submit seems simpler than trying to track all > the places this is called. Still checking the dev->done.qlen to be able > to unthrottle. Ideally we would do some error handling. Does the device keep spewing zero packets for all eternity? Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html